Sound-reproducing horn



. May 4,1926. 1,583,418

S. D. PADDACK scum) REPRODUGING non:

' k Filed Sept. 1', 1925 INVENTOR. A'hm/z 'DPadaac/t- TORNEY.

Patented May 4, 1926.

UNITED STATES 1,583,418 PATENT,- OFFICE.

SIMON D. PADDAGK, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOER- TO PADDAGK EI i'GI- nnnnme CORPORATION, or CALIFORNIA.

Application filed September 1, 1925.

T all whom it may concern:

Be it known that I, SIMON D. PADDACK, a citizen of the United States, residing at San Francisco, in the county of San Francisco, State of California, have invented a new and useful Sound-Reproducing Horn, of which the following is a specification, in such full and clear terms as will enable those skilled in the art to construct and use the same. y

This invention relates to a loud speaker horn for radio telephones or for phonograph reproducers, is to produce a very effective horn without unduly increasing its size. 1

Another object of the invention is to so arrange the horn as to make use of the sonorous qualities of the wood of which both sides of the initial part of the horn is made to improve the efiect of the tones produced.

Another object of theinvention is to provide a casing for the horn which will have an improved appearance over many such casings, and to provide the space within which the. radio apparatus may be installed, or in- "side of which the driving mechanism of the phonograph may be installed if the horn is used on a phonograph. Another object of the invention is to 'provide means whereby the entire area of the bottom of .the case may and since the inner and the through, bases are d as extensive sounding boards to prevent the thereby reduce the metallic sounds produced.

.Another object of the invention 15' to pro- .,vide a casing for the apparatuswhieh' can be easily removed when necessary to'examine the ap aratus mounted on the base.-

Othero as the description proceeds.

An embodiment of the invention is shown in the accompanying drawings in which the same reference numeral is applied to the SAN FRANCISCO,

and an. object of the invention be used to improve the tone efiect of the sounds passed there-- outer both made of thin wood, they act hono aph, reproducer 1 der the damper 16.

jects of the invention will appear.

CALIFORNIA, A eonronA'rrorf or SOUND-REPRODUCING HOB-N.

Serial No. 53,775.

same portion throughout, but I am aware that there may be modifications thereof.

Fig. 1 is a front elevation of the apparatus with portions shown in section for purposes of illustration.

Fig. 2 is a View of the complete apparatus.

The numeral 1 indicates the base of the casing which with the upper sounding board 2 are connected together at their edges by the sides 3 and4 and by twonarrow straps 5 and 6 which form the primary born with the two soundingbeards.

The sounding boards 1 and 2are made of an exceedingly elastic wood such as spruce, and rubber buttons 7 at each end of the easing serve to hold it at a little distance abovethe table or case onwhich theapparatusis installed, and at the wide end of the primary horn there 1s a curved member 8 which also aids in smoothing out thetones, and directs the vibrations into the horn- 9. The horn '9 is secured to the upper casing, and is detachable therewith at will when it is desired to examine stalled on the base.

The upper encloses the electrical apparatus, is arranged to have somewhat the appearance of a well known form of clock casing with the horn the Said apparatus inpart of the casing 10, which facing forward. It is secured to the base by snap hooks 11 at each end.

It will also be understood that while the d I loud speaker unit 12 is mounted on the end of the sounding er apparatus may be used must be mounted free of that board to give it the best tone effect.

The loud speaker has the diaphragm 13,

which is connectedto' the wooden tongue 14,

by means of a light rod 15 near the small end of the horn between 6, the soundin board 2 is provided with a plurality of ho es shown in dotted lines un- The damper 16 is pivoted at 17, and is of such a shape as to uncover the holes under the same one at a time asthe damper is rotated by the worm 18, which engages the small worm wheel 19' on the damper pivot pm.

22 and 23 indicate operating knobs for the electrical apparatus necessary to receive thev board 2, that whatever oththe two sides 5 and The worm 18 is carried by a shaft, 20, d which has the thumb knob 21 to rotate it;

boards spaced a s 1ort distance apart, a pair I radio soundsf'but such apparatus per se forms no part of the present invention, hence is not more completely illustrated.

In order to prevent dust from getting into the horn, and give the casing a better appearance, the mouth of the horn at 24 may be provided with a wire or fabric covering 25.

What I claim is as follows, but variousmodifications may be made in the construction shown in the drawings andabove particularly described form within the pur view of my invention.

1. In a sound reproducing horn, a pair' of sounding boards spaced apart, a pair of spacing members connected to said sounding boards to provide agradually widening channel forming a primary horn for sounds projected thereinto at the smallest end of such channel, and a horn detachably connected to said sounding board widening'in the reverse direction from the primary hornand having its mouth terminating in a substantially vertical plane and extending latera-11y from the axis of the first horn.

2. A horn for projecting reproduced sounds comprisin a pair of flatsounding of narrow spacers connecting the two sounding boards and forming therewith a primary horn, a secondary horn detachably secured to the sounding board and overlying the same, said horn terminating in a-substantially vertical plane, extended laterally from the first horn, and a movable damper for opening or closing certain holes in one of the sounding boards forming a portion of the primary horn to vary the tone of the sound produced.

3. A sound reproducing horn comprising a pair of flat sounding boards, a pair of narrow spacers connecting the sounding board and forming therewith a primary born, a secondary horn detaohably connected to the first horn at its widest end, and overlying the same, and a tongue within the primary horn at its narrowest portion to nected to the first horn and forming an extension thereof. over-lying said primary horn.

In testimony whereof I have hereunto set my hand this 22 day of August A.. D.

v SIMON D. PADDACK 

